Filter.



PATENTED JUNE 25, 1907.

2 SHEETS-SHEET 1.

45 M 51 I G l'lozucq J. GONVERSY.

FILTER.

APPLIOATION FILED JULY13, 1906.

PATENTED JUNE 25, 1907. J. couvnnsy.

I FILTER. APPLIOATION FILED JULY I3. 1906.

2 SHEETS-SHEET 2,

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c wwcutoz 1 UNITED STATES PATENT OFFICE.

JOSEPH OONVERSY, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO JOSEPHBOUQUET, OF NEW YORK, N. Y.

FILTER.

Specification of Letters Patent.

Patented June 25, 1907.

Application filed July 13,1906. Serial No. 326,076.

' city, county, and State of New Yor have I at line as in Fig. 2.

invented certain new and'useful Improvements in Filters, of which thefollowing is a specification.

This invention relates to liquid filters which operate under pressure ora head, and especially to wine and beer filters; and the bject of theinvention is to provide a simple and efficient filtering device orapparatus composed of like elements, any number of which may be groupedto form a filter-battery or apparatus.

The filter element possesses novel features which will be hereinafterdescribed with reference to theaccompanying drawings which serve toillustrate an embodiment of the invention. a

In the said drawingsFigure 1 is an axial section of one of thefilter-elements, except as to the inner drum which is only partly insection or broken away. Fig. 2 is a side elevation of the filter exceptas to the outer fabric and caps, which are in section. Fig. 3 is atransverse section of the filter element Fig. 4 is a similar section,but one showing the outer drum unlocked. Figs. 5, 6 and7 are views on asmaller scale showing the apparatus or battery of filter-elements in atank. Fig. 5 shows the tank in vertical section; Fig. 6 is a sideelevation, and Fi 7 is a horizontal section taken at line 00 in Fig. 5.Figs. 8 and 9 are detail views of means employed for securing the coveron the tank.

The single filter or filter-element comprises the following features,namely, an outer drum 1, preferably cylindrical, of sheet metalperforated as seen at 2 in Fig. 2. This drum is open at both ends andopen up one side, where the edges overlap, as seen in Figs. 3 and 4.Along these free edges of the drum are keeper-plates 3, alternatelydisposed on the respective edges, as clearly shown in Fig. 2; andthrough the eyes in the plates, in the manner of a loose hinge-pin,extends a locking rod 4, capable of being drawn out at will. This outerdrum is herein shown as rovided with three metal reinforcin band ssecured to it exteriorly, one band eing near the middle and the othersnear the ends thereof. These are merely to stiffen the metal of thedrum. On the upper end of the drum 1 is fitted a cap 5, and on its lowerend, a somewhat similar cap 6, provided with a nut, or internallyscrew-thread- 1 ed boss 7, to receive a discharge pipe. W ith- 1n andconcentrlc with the outer drum, is an inner drum 8, made fromsheet-metal and perforated as seen at 9 in Fig. 1. It may be said herethat the upright walls of the two drums 1 and S will be uniformlyperforated, or made from perforated sheet-metal, tinned sheet-copperbeing preferred. The drum 8 1s open at its lower end, but closed by acoverplate 10 at its upper end, where it is pro vided with an uprightscrew-stud 11 that passes through the cap 5 and is provided with a nut12, which screws down on the cap and holds it in place.

Over the outer drum 1. is drawn a cover 13, of canvas, or similar wovenfabric, and over the inner drum 8 is also drawn a similar cover 14, madealso from similar material. These covers fit rather snugly over therespective drums. The two drums are of different diameters, and theannular space between them is packed with paper-pulp 15, or the like?This material may also extend over the upper end of the drum 8, andbetween it and the cap 5.

Referring now to Figs. 5, 6 and 7, which show the grouping of thefilter-elements iii a filtering apparatus: In these figures, 16designates a tank provided with a removable cover 17, and an inlet 18for the liquid to be filtered. This tank may be supported on a base 19,of any kind, and in it are set aplurality of filter-elements eachdesignated in Figs. 5 and 7, as a whole, by A. Three elements are shownherein, although the number may be varied to suit the work to be doneand the size of the tank. In the bottom of the tank 16, suitablydisposed, are screw nipples 20, one of which is seen in Figs. 1 and 5,and on these are screwed, through the medium of the nuts 7, the severalfilter-elements A. The nipples 20 are the upturned ends of branch pipes21, which connect with a sin le pipe 22, the several pipes being providewith suitable stop-cocks.

' In the operation of the apparatus the beer or other liquid isadmittedto the tank 16 at the inlet 18 and rises to a much higher leveltherein than the filter elements A. The pressure produced through thetextile coverings of the outer and inner drums of the element andthrough the interposed paper-pulp, enters the inner drum, and flows offat the branch pipe 21 to the main discharge pipe 22. Obviously thepressure on the liquid 1n the drum may be produced in any mannerdesired, or known in the operation of force-feed filters.

The means employed for securing the cover. on the tank 17 where pressuremore than the head in the tank is applied to the liquid may be that seenin Figs. 8 and 9. The cover has in it a packing-ring 23, which rests onthe margin of the tank, and a b'ayonet fastening device, consisting of aslot 24 and stud 25, is employed to draW the cover down and form anhermetic joint. and is not herein claimed.

The facilities for'cleanin the filter element are important. The texti ecover 13 is first drawn OE and may be Washed or cleansed the element Ais now unscrewed from the nipple 20 and lifted out of the tank; the nut12 and caps 5 and 6 are removed; the locking rod 4 is now drawn out,when the outer drum will spring outward as seen in Fig. 4. This freesthe inner drum 8 and allows it to be drawnout, its textile cover 14removed and cleansed, and the paper-pulp removed. The parts being allseparated they may be thoroughly cleansed and reassembled, fresh paper-.p116) being suplplied. bviouslyt e drums 1 and 8 may be square orpolygonal in form or of almost any shape; but the cylindrical form shownis least expensive, is strong, and is satisfactory in every way.

The tank may have a drainage cook 26, as shown in Figs. 5 and 6.

This is a known device Having thus described my invention, I claim 1. Afilter-element, having an inner perforated drum closed at one end, anouterperforated drum having a joint at one side and provided withdetachable means for holding said joint closed while the filter is inuse, caps for closing the respective ends of said outer drum, one ofsaid caps havin in it a screwthreaded outlet for the filtere liquid,textile covers for the respective drums, and a packing of fibrousmaterial in the annular space between the two drums.

2. A filter-element, havin an outer, perforated drum of resilient seet-m'etal provided With keeper-plates at its margins and a removablelocking rod to engage said plates and hold the joint closed, removablecaps on the respective ends of said drum, one of said caps having in ita screwthreaded outletaperture, an inner, perforated drum closedpermanently at one end by a cover-plate and secured at this end to theouter cap of the outer drum, textile covers for the respective drums,and paper-pulp acked into the annular space between sai drums.

3. A filter-element, having two perforated drumsof sheet material, ofdifferent diameters, said drums being disposed one within the other, andfibrous material filling the annular space between the drums, the outerdrum having a lockedside joint adapted to be readily opened to permitthe outer drum to expand by its own resiliency.

In witness whereof I have hereunto signed my name this 12th day of July,1906, in the presence of two subscribing witnesses. I JOSEPH CONVERSY.

Witnesses:

HENRY CONNETT, WILLIAM J. FIRTH.

